Recording medium, and image forming method and recorded matter using same

An image forming method for forming images on a recording medium comprising the steps of:

• (a) providing a recording medium comprising a supporting body;
• and an ink receiving layer on said supporting body, wherein said recording medium contains in said ink receiving layer a compound expressed by general formula (I) indicated below and exhibiting a solubility in water of 0.01 to 5%,
• wherein X represents a hydrogen atom, or an alkyl, aryl, alkenyl, acyl, sulfonyl, sulfinyl, alkoxy, or acyloxy group, which may or may not have a substituent;
• R1 to R4 respectively and independently represents a hydrogen atom or an alkyl group;
• and Y represents a hydroxyl, carboxyl, alkyl, amino, alkenyl, alkoxy, aryl, alkylcaronyloxy, alkenylcarbonyloxy, arylcarbonyloxy, aminocarbonyloxy, alkoxyalkyl, aralkyl, alkylcarbonylamino, alkylsulfonylamino, alkylaminocarbonyl, aralkyloxycarbonyl, alkoxycarbonyl, or alkylaminosulfonyl group, which may or may not have a substituent, wherein Y can be a polymer, and the compound expressed by formula (I) can be a polymer having X and Y as main chains;
• (b) depositing on the recording medium a recording liquid comprising a compound represented by general formula (II) given below,
• wherein X is an anilino group substituded with at least one SO3M, Y is OH, Cl, or a morpholino group, and M is H, Li, Na, K, ammonium, or an organic amine.